1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sweet [91]
2 years ago
6

There are islands in the ocean that are growing larger. The Hawaiian Islands are good examples of this. The reason that the isla

nds were formed and are still growing is A) they were produced by drought. B) they were produced by volcanoes. C) they were produced by hurricanes. D) they were produced by earthquakes.
Chemistry
1 answer:
Inessa [10]2 years ago
5 0
My guess would be "B) they were produced by volcanoes" because hawaii has a bunch of volcanoes and volcanoes can produce extra land. While the other answers wouldn't make sense. Definitely B.
You might be interested in
A mixture of water and graphite is heated to 600 k in a 1 l container. when the system comes to equilibrium it contains 0.15 mol
Lunna [17]
(missing in Q) : Calculate the concentration of CO & H2 & H2O when the system returns the equilibrium???

when the reaction equation is:

C(s) + H2O(g)  ↔ H2(g) + CO(g) 

∴ Kc = [H2] [CO] / [H2O]

and we have Kc = 0.0393 (given missing in the question)

when the O2 is added so, the reaction will be:

2H2(g) + O2(g) → 2H2O(g)

that means that 0.15 mol H2 gives 0.15 mol of H2O

∴ by using ICE table:

            [H2O]          [H2]        [CO]

initial 0.57 + 0.15      0               0.15

change  -X                +X              +X

Equ   (0.72-X)             X            (0.15+X)

by substitution:

0.0393 = X (0.15+X) / (0.72-X)  by solving for X

∴ X = 0.098 

∴[H2] = X = 0.098 M

∴[CO] = 0.15 + X
 
           = 0.15 + 0.098 = 0.248 M

∴[H2O] = 0.72 - X

             = 0.72 - 0.098

             = 0.622 M


8 0
3 years ago
Which of the following is a type of physical change.
trapecia [35]

Answer:

B. a change in their state or substance

Explanation:

A change of state consists of a physical process in which the structure of the substance changes, its appearance. EXAMPLE: in the merger, the solid state becomes liquid, changes the rearrangement of particles from being highly compacted to being less compact.

6 0
3 years ago
For a species with a diploid number of 26, indicate how many chromosomes will be present in the somatic nuclei of individuals th
Sedbober [7]

Answer:

Haploid - 13

Triploid - 39

Tetraploid - 52

Trisomic - 27

Monosomic - 25

Explanation:

A haploid organism has half the chromosome number of a diploid version, hence 26/2 = 13

A triploid organism has 3 sets of a haploid chromosomes, hence 13 x 3 = 39

A tetraploid is double of a diploid, 26 x 2 = 52

Trisomic organisms have one extra chromosome in addition to the normal diploid. Hence 26 + 1 = 27

Monosomic organism has one less chromosome than the normal diploid. Hence 26 - 1 = 25

6 0
3 years ago
An ionic compound has a slightly negative heat of solution in water. would you expect it to be soluble or insoluble in water?
Grace [21]
The ionic compound will be soluble in water. 
The value of the heat of solution of a substance is one of the factors that determine whether a substance will dissolve or not. A negative heat of solution signifies that the reaction will be spontaneous, so the ionic compound will dissolve in water.
3 0
3 years ago
How do you do Calorimetry? We've had it in class for about a week and I still don't understand it so does anyone have any simple
Ede4ka [16]

It basically works like this:

You dry out the food

put it in this ceramic oven thingy surrounded with water

burn the food

the water will heat up

measure the water temperature in f

= calories

Calorimetry is the science or act of measuring changes in state variables of a body for the purpose of deriving the heat transfer associated with changes of its state due, for example, to chemical reactions, physical changes, or phase transitions under specified constraints.

in this case, you're finding the amount of energy is contained within it when combusted

8 0
3 years ago
Other questions:
  • What is kinetic energy? *
    15·1 answer
  • REALLY NEEED HELP!!!!
    15·1 answer
  • Which element and how many atoms does each compound have in the picture?
    5·1 answer
  • When you remove energy from particles they move _____<br> and the matter _____
    7·1 answer
  • For the parts in a system to work correctly, the parts must be arranged or built upon in a particular order. What is the correct
    11·2 answers
  • Can you answer this please ?
    9·1 answer
  • Calculate the volume of 11 g of CO2 at NTP ?​
    11·1 answer
  • Write a balanced half-reaction for the oxidation of manganese ion (mn2 ) to solid manganese dioxide (mno2) in acidic aqueous sol
    9·1 answer
  • Can plants and animals adapt more easily to slow environmental changes or fast environmental changes? Explain.
    10·2 answers
  • How many moles of oxygen are contained in. 752 moles of calcium carbonate?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!